Ore-concentrator



2 Sheets-Sheet A'1.

(No Model.)

`T MGGLBW ORE UONC'ENTRATOR.

No. 505,169. Patented Sept. 19, 1893.

(No Model.) m e sheets-sheet 2. T. MOGLEW.

ORB GONGENTRATOR. No, 505,169.` Patented Sept. 19, 1893.

NTTED STATES PATENT OFFICE.

THOMAS MCGLEVV, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO THE MCGLEW ORECONCENTRATOR COMPANY, OF CALIFORNIA.

ORE-CONCENTRATOR.

SPECIFICATION forming part of Letters Patent No. 505,169, datedSeptember 19, 1893.

Application filed April 2l, 1892. Serial No. 430,019. (No model.)

To @ZZ whom it may concern:

Beit known that I, THOMAS MCGLEW, a citizen of the United States,residing at San Francisco,in the county of San Francisco and State ofCalifornia, have invented certain new and usefullmprovements inOre-Coneentrators, of which the following is a specification.

My invention relates especially to concentrators employed forconcentrating andsaving sulphurets and other valuable particles ofmetals contained in ores, known as the wet concentration and has foritsobject the production of a machine, of this character Whereiu many ofthe parts heretofore necessary may be dispensed with rendering themachine cheaper in construction, easier to use and more effective inoperation, than those heretofore employed.

To this end my invention consists in a shaking table provided withpeculiar and novel features or mechanism for imparting the necessarymovements for separating the dbris or Worthless portion of the ore fromthe heavier or valuable parts, and deliver it in its proper condition atthe head of the machine or table.

In the accompanying drawings forming part of the specification, likeletters of .reference Wherever they occur indicate corresponding partsin all of the figures.

Figure l is a longitudinal section of my ore concentrator taken throughline if y Fig. 2. Fig. 2 is a plan or top view. Fig. 3 is a sectionthrough line :c .fr Fig. l looking to the left. Fig. 4 is a view indetail.

A represents a bed-piece or platform on which the machine is mounted anda head piece or block A will support the frame B carrying the drivingpulley B to which it is rigidly bolted.

To the frame B is hinged the main frame B2 which supports theshaking-table B3 and its operating mechanism and permits the latter tobe raised or lowered from the lower end on the hinged joint C C thatconnects the two frames together.

Upon the main or supporting frame B2 is placed a longitudinal drivingcam-shaft D operating in bearings on the cross-beams at the ends of theframe. Two cams D DX on said shaft operate between two vertical lugs orguide-plates H, H, which are bolted to the under side of theshaking-table B3 and as the driving shaft is rotated a transverserecipro eating movement is imparted to the table. A universal jointconnects the upper end of the shaft D with the pulley driving shaft anda cam-plate Ffastened to theunder side of the shaking-table B2 isoperated upon by a grooved pulley or wheel f turning around a pin orstud that is secured to the shaft D. A iiat spring K is placed acrossthe lower end of the table B2 the tension of which is controlled by aset screw L having its seat in a cross-bar LX supported by the bracketsor straps M which are bolted to the main-frame B2 and as the machine isoperated the rotary motion of the grooved Wheel f through the medium ofthe cam-plate F together with the reaction of the dat spring K imparts alongitudinally reciprocating movement to the table B3 which is held downto its seat by means of a strap or bent bar B4 secured to the under sideof the table and reaching across and underneath the shaft D.

The operation of the grooved wheel f upon the cam-plate Will be clearlyseen in Figli in which the full lines indicate in plan view the positionof grooved wheel, cam-plate and table B2 `at lits extreme longitudinalmovement toward the left or against the flat spring K while the dottedlines show the same parts in the position of the table at its eXtremelongitudinal movement toward the right or the table at rest, the groovedwheel beginning about to operate on the cam-plate.

The tension of the fiat spring K is regulated by the set screw L tocontrol the force exerted to impart the return movement to the table.This movement is arrested and the table brought to rest by means of abumper I of rubber or similar yielding material fixed to a transversebar IX which in turn is bolted to straps or brackets I2 secured to thehead of the frame B2.

A series of friction rollers .I connected to the table B3 form thecontact points between the table and the bumper by which means thefriction produced between the bumper and the shaking table with itscombination of movements is considerably reduced. The table rests uponfour friction ball-bearings N,

IOO

N, N, N, placed at the four corners of the main or supporting frame B2and the balls move in a cup-plate O O permanently Xed to the corners ofthe table and frame as shown.

In order to provide a means for adjusting the table to a, greater orless degree of inclination on its hinged or pivotal point, I haveprovided the vertical toothed racks P P confined to the outer face ofthe side beams of the frame B2 by guide-plates p and a transverse shaftP carrying the pinions P2 P2 to engage the teeth on the rack and thetable will be raised or lowered at will, even during the operating ofthe machine by means of the crank arm P3 at one end of the transverseshaft. v

In practice the ore with Water is fed to the table in the usual way andmotion is imparted to the machine by a belt connection with the pulley Bwhich causes the longitudinal cam-shaft to revolve and the camplate nearthe head of the shaft to engage the grooved wheel on the pin orstud ofthe shaft and move the table backward against the [iat spring andcompress the same until the extreme point of the cam plate leaves thegrooved wheel when the reaction of the fiat spring will shoot the tableforward, the friction rollers striking against the bumper at the head ofthe machine and thus percussion of the table is obtained in alongitudinal manner while the cams on the driving shaft will impart atransverseA reciprocal motion to the table simultaneously or nearly so.This combination of movements to which the shaking table is subjectedproduces a spreading out of the ore and water over the Whole width ofthetable, allowing the Water and lighter worthless particles as sand anddbris to gravitate toward the lower end of the table and to accumulatein a trough R from which it is run off through a pipe connected to thebottom of the trough, while the heavier and valuable particles arecarried upward into a trough Q at the upper end of the table, thusseparating the gangue from the concentrates which can easily be gatheredin said trough to be subjected to further treatment.

The provisions for adjusting the inclination of the shaking table rendera ready means to prevent the valuable particles from joining the slimein a-downward movement.

Having thus described my invention, what I claim, and desire to secureby Letters Patplate fixed to the under side of the table engaging agrooved pulley or wheel on the longitudinal shaft, arranged andoperating in the manner, substantially as set forth and specified.

2. A vibratin g ore concentrator having friction rollers or wheels atthe upper end of the table and a bumper fixed to the frame in line withthe friction Wheels and engaging the bumper, a resilient springregulated by a set screw or bolt, and means for vibrating said table, asdescribed.

3. In an ore concentrator the combination with a vibrating table havinga transverse reciprocal and a longitudinally reciprocating movement ofthe friction rollers engaging a bumper fixed to the frame and in linewith the rollers, of a resilient spring and a set screw, as and for thepurpose set forth.

4. The combination in an ore concentrator of a driving pulley, asupporting fra1ne,a vibrating table pivoted thereto, a longitudinal camshaft having a universal joint connecting with the driving pulley shaft,cams on said shaft working in guides secured to the under side of saidtable, and a cam plate fixed to the under side of the said tableengaging a grooved pulley or wheel on the longitudinal shaft, arrangedand operated as and for the purpose set forth.

In testimony that I claim the foregoing I have hereunto set my hand andseal.

THOMAS MCGLEW. [L s] Witnesses:

G. W. M. SMITH, CHAs. E. KELLY.

